CORD-229 - updated to implement initial base switch provisioning

Change-Id: I3deca583dc2753e1a2c77629f1ee45f8b66223c8
diff --git a/roles/head-node/files/compute-node.yml b/roles/head-node/files/compute-node.yml
index 7fb41f0..4a6a50d 100644
--- a/roles/head-node/files/compute-node.yml
+++ b/roles/head-node/files/compute-node.yml
@@ -1,4 +1,4 @@
 - hosts: all
   remote_user: ubuntu
   roles:
-    - compute-node
+    - {{ provision.role }}